Question

Select the INCORRECT statement regarding digestion in large intestine.

• A. Mucosa does not produce any enzyme.
• B. Carbohydrates are fermented by bacterial action.
• C. Carbohydrate digestion ends in production of indole, skatole and \(\text{H}_{2}\text{S}\).
• D. Bacteria synthesize vitamin B and vitamin K

Hint:

Recall what the large intestine does: no enzymes, bacterial fermentation and vitamin synthesis.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept
The large intestine does not digest food by enzymes. Its bacteria act on undigested material.

Step 2: Check the statements
Its mucosa makes mucus but no enzymes, so the first statement is correct.
Bacteria ferment undigested carbohydrates, so the second is correct.
Bacteria make vitamin B and vitamin K, so the last statement is correct.

Step 3: Find the wrong one
Indole, skatole and \(\text{H}_{2}\text{S}\) come from bacterial action on proteins, not carbohydrates. Carbohydrate digestion does not end in these products, so this statement is incorrect.

Final Answer:
The incorrect statement is that carbohydrate digestion ends in indole, skatole and \(\text{H}_{2}\text{S}\). \[ \boxed{\text{(C) }\text{Carbohydrate digestion ends in production of indole, skatole and }\text{H}_{2}\text{S}.} \]